Sheet-end indicator



Jan. 20, 1931. w; TAYLOR I 1,789,790

SHEET END INDICATOR Filed Oct. -22 1922s INVENTOR.

LLIFILTER L. THYLIJR Patented Jan. 20, 1931 UNITED STATES PATENT OFFICE WALTER L. TAYLOR, OF LOMA LINDA, CALIFORNIA SHEET-END INDICATOR Application filed October 22 1928. Serial No. 314,173.

This invention relates to improvements in which will give an audible signal rather than a visible signal thereby calling the persons attention to the fact that the end of the sheet has been reached irrespective of the si ht.

bther objects and advantages will be ap- 2 parent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a fragmentary detail view taken on the line 11 of Figure 2, and showing the typewriter platen in elevation,

Figure 2 is a cross sectional view taken on the line 2-2 of Figure '1 i Figure 3 is a fragmentaryidetail cross sectional view taken on the line 33 of Figure 4," and v Figure 4 is an enlarged fragmentary view showing the slider and paper engaging fingel.

Many attempts have been made to devisemeans whereby the end of a sheet passing 0 through a typewriter would be indicated thereby informing the operator that further typing must cease. These devices have been so attached to the typewriter that the end" of the sheet of papers could be viewed by gazing into adjustable mirrors. Should the v operator be gazingaway from the indicator, it is quite easy topass the end of the sheet and write upon the platen.

"follows: Applicant has produced a device entirely audible signal when the end of the paper is reached. e

In the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates the platen ofany standard form of typewriter over which a sheet of paper 6 is adapted to pass was to be typed thereon. Secured to the frame of the typewriter in any convenient manner is a slider and for the purpose of illustration I have shown a pair of guide bars 7 and 8'which are supported by'the frame 9 and serve to slidably support a slider 11. This slider is substantially c sha ped and to one of the arms of the C is attached a bracket 12. having a flexible portion 13. From this bracket a paper engaging arm 14 extends. This arm carries a prong 16 which contacts the roll '5 and is adapted to underlie the edge of the sheet 6. The sides of the prong 16 are rolled as shown at 17 and 18 the will be later seen.

A spring 19 is connected to one of the arms of the C and has its opposite end secured to a bracket 21 which is in turn fastened to the rods 7 and 8. The tendency of this spring 19 is to move slider 11 towardthe ri ht of the drawing. A setting rod 22 is'sli ably supported through the frame 9 and extends through the slider 11 and carries a stop 23 adjacent its end portion to which is secured a spring 24 the opposite end of which spring also connects the bracket, 21. A handle 26 is secured to the rod 22 thereby enabling the same to be more easily manipulated.

A lever 27 is pivoted to a support 28 carried upon the rods 7 and 8. This lever is connected to a hammer arm 29 having a hammer ell 32. In

31 which is adapted to engage a viewing Figure 2 it will be noted that the device is preferably inserted between the engaging rolls 33 and 34. The rod 35 com-- monly employed to support certain portions of'the typewrltmg may also be used for supporting the bracket 21. v

The manner of operating the device is as Assuming that the-same is attached to a typewriter. a sheet of paper is placed within purpose ofwhich the typewriter in the customary manner. By now moving the rod 22 toward the left, the stop 23 will contact the slider 11 and push the same toward the left of the drawing. This will cause the prong 16 to move ofi from the paper (that is assuming that the paper has been placed upon the roll so that it will pass beneath the prong 16 due to the flared portions 17 and 18. As soon as the rod 22 is released the spring 24 will return the rod to its normal position while the spring 19 will pull the slider toward the right of the drawing and cause the prong 16 to pass under the sheet thus raising this edge as illustrated in Figures 1 and 2. lVhen the writing operation has advanced far enough it will be apparent that the side of the sheet will pass out of engagement with the slider, after which the spring 19' will move the slider toward the right of the drawing and into contact with the lever 27. This will cause the hammer lever 29 and the hammer 31 to be actuated and brought into engagement with the bell 32 thus giving an audible signal.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to without departing from thespirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim 1'. In combination with a typewriter having a platen, supporting means positioned adjacent said platen and parallel therewith, a

slider movable on said supporting means, a

resilient arm carried by said slider, said arm having a prong engaging said platen, resilient means normally moving said slider'in one direction, manual means adapted to move said slider against the tension of-said resilient'means, an audible signal supported on said supporting means and means actuated by said slider for sounding said audible signal in the manner described.

2. In combination with a typewriter having a platen, a support positioned parallel to said platen, a slider movable on said support, an arm carried by said slider and flexibly secured thereto, a prong carried by said arm and normally engaging said platen, a spring secured to said slider at a remote point, the spring tending to move said slider in one di rection, means for moving said slider in the opposite direction from said spring and means for causing an audible signal when said slider is released from engagement with a sheet of paper positioned on said platen.

3. In combination with a typewriter having a platen, a pair of supporting rods secured thereto, a slider movable on-said rods and in a direction longitudinal to said platen, said slider having an arm carrying a prong aflixed thereto, said prong bearing on said WALTER L. TAYLOR. 

